<template>
  <footer class="footer">
    <span class="todo-count">剩余<strong>{{count}}</strong></span>
    <ul class="filters" @click="fn">
      <li>
        <a :class="{selected:isSel === 'all'}" href="javascript:;" @click="isSel='all'">全部</a>
      </li>
      <li>
        <a :class="{selected:isSel === 'no'}" href="javascript:;" @click="isSel='no'">未完成</a>
      </li>
      <li>
        <a :class="{selected:isSel === 'yes'}" href="javascript:;" @click="isSel='yes'">已完成</a>
      </li>
    </ul>
    <button class="clear-completed" @click="del">清除已完成</button>
  </footer>
</template>

<script>
export default {
  data() {
    return {
      isSel:'all'
    }
  },
  methods: {
    fn(){ // 切换筛选条件
      this.$emit("changeType", this.isSel)
    },  
    del() {
      this.$emit('delCom')
    }
  },
  props:['list'],
  computed: {
    count(){
      return this.list.length
    }
  }
}
</script>